2014-10-28 17:37:19McLol:Toenail and nail fungus normally starts as a white or yellowish looking spot on your nails. Over time, the fungus covers the whole nail and could infect others. This results in stained toenails that thicken and start to crumble around the edges. The toenail fungus is unattractive and commonly makes the individual avoid sandals or other revealing shoes.